@misc{indiciaeb5cba770546f,
  title = {When should schizophrenic and normal groups be compared?},
  author = {L J Chapman and J P Chapman},
  year = {1978},
  doi = {10.1016/0022-3956(78)90037-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/722636/},
  note = {Source identifier: 722636}
}